HTMLTestRunner Import error

I have read multiple questions regarding the subject. In the past I had this working on another pc, but now I cannot find solution so I am begging for help :)

I downloaded the HTMLTestRunner as suggested and put the HTMLTestRunner.py inside the .sikuli folder. My sikuli script looks like:

import unittest
import HTMLTestRunner

class BDTests(self):
    def testAOpenBrowser(self):
        import launchchrome
        print("Open chrome done!")

suite = unittest.TestLoader().loadTestsFromTestCase(BDTests)
outfile = open("C:\\Users\\eraclis\\Documents\\Reports\\results.html","w")
runner = HTMLTestRunner.HTMLTestRunner(stream=outfile,title='Test Report demo',description='Test description')
runner.run(suite)

Now when I try to run it I am getting:
[error] script [ testRunner ] stopped with error in line 2
[error] ImportError ( No module named HTMLTestRunner )